CN106761494B - A kind of guider and method for tunnel pre-grouting armature boring - Google Patents
A kind of guider and method for tunnel pre-grouting armature boring Download PDFInfo
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- CN106761494B CN106761494B CN201710150476.7A CN201710150476A CN106761494B CN 106761494 B CN106761494 B CN 106761494B CN 201710150476 A CN201710150476 A CN 201710150476A CN 106761494 B CN106761494 B CN 106761494B
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- flexural pivot
- tunnel
- guider
- sunpender
- grouting
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 7
- 239000011435 rock Substances 0.000 abstract description 5
- 238000009412 basement excavation Methods 0.000 abstract description 3
- 238000005065 mining Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 8
- 229910000828 alnico Inorganic materials 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 241000233633 Phytophthora drechsleri Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/24—Guiding or centralising devices for drilling rods or pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to constructing tunnel equipments, specially a kind of guider and method for tunnel pre-grouting armature boring.Solves the drilling stage of the construction of current grouted anchor bar, the direction of drilling and tunnel center line direction be inconsistent and the circumferential spacing of drilling is inconsistent, causes the technical issues of security risk.A kind of guider for tunnel pre-grouting armature boring includes a pair of bearings of hanger beam, the sunpender for connecting hanger beam and joint outer part, the vertical end for being connected to a pair of of suspender montant of hanger beam left and right ends and being separately mounted to each suspender montant for jacking drilling rod.The present apparatus improves the accuracy of boring direction during Support System in Soft Rock Tunnels carries out pre-grouting anchor pole prebored hole, and to reduce security risk, it is notable to improve work efficiency.The device has the characteristics that reasonable design, convenient for disassembly and assembly, easy to operate, is suitable for the construction sites such as highway, railway tunnel and city underground, water conservancy project diversion tunnel, mining excavation.
Description
Technical field
The present invention relates to constructing tunnel equipment, specially a kind of guider for tunnel pre-grouting armature boring and
Method.
Background technology
In order to improve the safety in tunnel excavating process, in IV, V grade of weak surrounding rock tunneling process, except using I-shaped
Steel arch-shelf+bar-mat reinforcement+gunite concrete carries out outside closing supporting, also needs to carry out advance support reinforcing using grouted anchor bar mostly.
When pre-grouting suspension roof support, the root of anchor pole is supported on the I-shaped steelframe of face, before anchor pole
End is goed deep into inside vault country rock, by grouting under pressure, improves the stability of vault weak surrounding rock.For convenience's sake, it generally adopts
It is drilled with air drill, then squeezes into anchor pole row mud jacking again；For the ease of operation when drilling, general rock-bolt length is unsuitable long
And it is arranged outer（It is upward at vault）10~12 ° of angle.The anchor pole of each P. drechsleri longitudinally has certain lap of splice.See figure
1。
Currently, the drilling stage of the construction in grouted anchor bar, often by manual operation, arbitrariness is also big is influenced, the side of drilling
To inconsistent with tunnel center line direction；The circumferential spacing of drilling is inconsistent, causes serious security risk, and dip angle of hole is excessive to lead
Cause phenomenon of seriously backbreaking occur.
In consideration of it, being highly desirable to one kind can realize that the circumferential spacing of boring direction, drilling, angle of inclination reach design mark
Standard reduces construction safety risk, reduces the device and method of waste of backbreaking.
Invention content
The present invention is the drilling stage for the construction for solving current grouted anchor bar, often by the manual operation shadow that arbitrariness is also big
It rings, direction and the tunnel center line direction of drilling are inconsistent and the circumferential spacing of drilling is inconsistent, cause serious security risk
The technical issues of, a kind of guider and method for tunnel pre-grouting armature boring is provided.
A kind of guider for tunnel pre-grouting armature boring of the present invention is to use following technical scheme
It realizes：A kind of guider for tunnel pre-grouting armature boring, including hanger beam, for connect hanger beam and
The sunpender of joint outer part is connected to a pair of of suspender montant of hanger beam left and right ends and is separately mounted to each hang vertically
The end for having montant is used for a pair of bearings of jacking drilling rod.
The present invention utilizes two bearing jacking drilling rods, and the sliding friction between drilling rod and device is made to become rolling friction, drops
Lower resistance, anti-locking apparatus Fast Wearing.
Further, the pair of suspender montant is rotatablely connected by the left and right end of a shaft and hanger beam respectively；
It is connected with return spring between two suspender montants.
It using expansible formula suspender, is directly entered from below convenient for drilling rod, tightens suspender using return spring, prevent drilling rod
Automatically it skids off；When taking out drilling rod, only need to exert oneself downwards, drilling rod can pushing tow bearing open, so that drilling rod is skidded off.
Further, the sunpender runs through hanger beam and rotation setting therebetween vertically；Boom foot passes through limit
Block is stuck in the lower section of hanger beam.
Drilling rod weight is undertaken using sunpender, by the rotation relation of sunpender and hanger beam, realizes the adjustment in suspender direction.
Further, further include flexural pivot；The flexural pivot is located above sunpender, is connected below the top of sunpender and flexural pivot.
By the rotation of flexural pivot, be conducive to the micro adjustment of drilling rod operating angle.
Further, further include permanent magnet；The lower section of permanent magnet is movably connected in above the flexural pivot.
It is adsorbed on I-shaped arch using alnico magnets, is convenient for Fast Installation and dismounting.
Further, the permanent magnet includes a magnetic conductive shell, and it is permanent that control there are one setting is rotated in magnetic conductive shell
The magnetic control of magnet magnetism size switchs；The lower section of permanent magnet magnetic conductive shell is movably connected in above the flexural pivot.
It is switched using magnetic control, drives alnico magnets to rotate 90 °, magnetic output quantity is made to become maximum（Or it is minimum）,
Realize the absorption with I-shaped arch（Or separation）.
A kind of guidance method for tunnel pre-grouting armature boring of the present invention is to use following technical scheme
It realizes：A kind of guidance method for tunnel pre-grouting armature boring includes the following steps：One is determined using 2 points directly
Point is determined by prior preformed hole on the I-steel arch web of front in front of the principle of line, i.e. drilling rod, after drilling rod rear point passes through
The guider installed on square I-steel arch determines；The installation site of rear guider should be true according to following two standards
It is fixed：1. drilling rod moves towards and tunnel centerline parallel；2. guider clipping room away from design requirement is met, i.e., after kelly bar spacing with
Front drilling rod spacing is consistent, and error is not more than allowable range；Drilling guide device is pacified after meeting above-mentioned two standards
Holding position determines.
The present apparatus and method can significantly improve brill during Support System in Soft Rock Tunnels carries out pre-grouting anchor pole prebored hole
It is notable to improve work efficiency to reduce security risk for the accuracy in hole direction, standard construction behavior.There is described device design to close
Reason, feature convenient for disassembly and assembly, easy to operate are not only applicable to highway, railway tunnel construction, while being suitable for city underground, water
Work diversion tunnel, the occasions such as mining excavation have wide popularizing application prospect.
Description of the drawings
Fig. 1 tunnel grouting armature boring schematic diagrames.
Fig. 2 schematic structural views of the invention.
1- drilling rods, 2- bearings, 3- suspension hooks, 4- suspender montants, 5- hanger beams, 6- shaft 7- return springs, under 8- flexural pivots
Disk, disk on 9- flexural pivots, 10- dormant bolts, 11- rotate steel ball, 12- sunpenders, 13- permanent magnets, 14- magnetic controls switch, 15-
I-shaped arch, 16- faces, 17- reserve bolthole, 18- vault excavation lines, and 19- sprays anchor contour line, 20- guiders.
Specific implementation mode
A kind of guider for tunnel pre-grouting armature boring, including hanger beam 5, for connecting hanger beam
5 and joint outer part sunpender 12, be connected to a pair of of suspender montant 4 of 5 left and right ends of hanger beam vertically and install respectively
It is used for a pair of bearings 2 of jacking drilling rod 1 in the end of each suspender montant 4.
The pair of suspender montant 4 is rotatablely connected by the left and right end of a shaft 6 and hanger beam 5 respectively；Two are hung
It is connected with return spring 7 between tool montant 4.
The lower end of the pair of suspender montant 4 is equipped with suspension hook 3, and a pair of of suspension hook 3 is arranged horizontally towards each other and two suspension hooks 3 are adjacent
End have interval；The pair of bearing is separately mounted to two adjacent one end of suspension hook 3.
The sunpender 12 rotates through hanger beam 5 and therebetween setting vertically；12 bottom of sunpender passes through limited block card
In the lower section of hanger beam 5.
It further include flexural pivot；The flexural pivot is located at 12 top of sunpender, is connected below the top of sunpender 12 and flexural pivot.
It further include permanent magnet 13；The lower section of permanent magnet 13 is movably connected in above the flexural pivot.
The permanent magnet 13 includes a magnetic conductive shell, is rotated in magnetic conductive shell and controls 13 magnetic of permanent magnet there are one setting
The magnetic control switch 14 of property size；The lower section of 13 magnetic conductive shell of permanent magnet is movably connected in above the flexural pivot.
The flexural pivot includes 8 lower wall of flexural pivot, disk 9 on flexural pivot, is wrapped on flexural pivot lower wall 8 and flexural pivot between disk 9 and turns
Dynamic steel ball 11；Pan bottom 8 is equipped with opening under flexural pivot, and sunpender top passes through the opening to be connected with rotation steel ball；Under the flexural pivot
Disk 8 is connected with disk on flexural pivot 9 by a pair of of sunk screw 10；Sunk screw 10 passes through on flexural pivot lower wall 8 and flexural pivot after disk 9
It screws in permanent magnet 13.
As shown in Fig. 2, the axis of bearing is in horizontally disposed（Vertical paper in figure）, it is spaced between a pair of of suspension hook, it bores
Bar is located above a pair of bearings, and return spring 7 is located at folding of the top of drilling rod for controlling vertical sunpender；The axis of shaft
Positioned at horizontal direction（Perpendicular to paper in figure）, boom foot is equipped with limited block（Such as nut）To realize the positioning of vertical direction.
The operation principle of the present invention：Using the upper and lower disk of steel, the steel ball shape that can be rotated is wrapped up into flexural pivot, is conducive to bore
The micro adjustment of bar operating angle.
The principle for determining a line using 2 points, front is by the preformed hole on preceding Pin I-steel arch web, and rear is by rear Pin
The guider installed on I-steel arch corresponding position determines front and back 2 points of position, reaches in vertical facade, drilling rod with
Tunnel centerline direction is consistent, in the horizontal plane, the drilling rod purpose consistent with Soil Anchor Design elevation angles.
The present apparatus can be easily adsorbed on the inframarginal of I-steel arch, and position should be with previous Pin I-steel arch abdomen
Preformed hole on plate is in straight line, and convenient for this straight line is consistent with tunnel longitudinal centre line direction.
A kind of guidance method for tunnel pre-grouting armature boring includes the following steps：One is determined using 2 points
Point is by front I-steel arch in front of the principle of straight line, i.e. drilling rod（Left side in Fig. 1）Prior preformed hole determines on web, drilling rod
Rear point passes through rear I-steel arch（Right side in Fig. 1）The guider of upper installation determines；The installation position of rear guider
Setting should determine according to following two standards：1. drilling rod moves towards and tunnel centerline parallel；2. guider clipping room is set away from satisfaction
Meter requires, i.e., rear kelly bar spacing is consistent with front drilling rod spacing, and error is not more than allowable range；Meet above-mentioned two
Drilling guide device installation site determines after standard.
By the direction of the change poles alnico magnets N and the poles S, magnetic maximum output and the minimum variation exported are realized, when
When magnetic maximum, device can be adsorbed on the bottom plate of I-steel arch, ensure the normal work of device；When magnetic minimum,
Adsorption capacity disappears, to the Fast Installation for realizing device and fast quick-detach.Permanent magnet is the shell of a magnetic conduction, the magnetic
Property the control rotation of switch 14 be located in the shell, magnetic control switch 14 is a magnet, and the structure similar to butterfly is made, when it
When in horizontal plane, descend the magnetism of both sides most weak on the shell；When magnetic control switch 14 turns to vertical plane, on shell
The magnetism of downside is most strong.By rotate magnetic control switch 14 can controling shell upper and lower sides magnetic size.
Jacking bearing can be freely rotated with drilling rod, and sliding friction is become pivoting friction, abrasion is reduced, extends making for device
Use the service life.
Dead weight naturally droop effect under, jacking bearing is horizontal, will be with bearing in the drilling rod of a fixed angle of altitude
Between be in point contact state, be bound to cause gauche bearings, accelerate abrasion, by point of suspension by consolidate be changed to it is hinged, but drilling rod with
Bearing is contacted in face, improves the inhomogeneities of jacking bearing wear.
Claims (1)
1. a kind of guidance method for tunnel pre-grouting armature boring being used for tunnel pre-grouting armature boring using one kind
Guider realize, the guider includes hanger beam（5）, for connecting hanger beam（5）With joint outer part
Sunpender（12）, be connected to hanger beam vertically（5）A pair of of suspender montant of left and right ends（4）And it is separately mounted to each suspender
Montant（4）End be used for jacking drilling rod（1）A pair of bearings（2）；The sunpender（12）Run through hanger beam vertically（5）And two
Setting is rotated between person；Sunpender（12）Bottom is stuck in hanger beam by limited block（5）Lower section；It further include flexural pivot；The ball
Hinge is located at sunpender（12）Top, sunpender（12）Top and flexural pivot below be connected；It further include permanent magnet（13）；The flexural pivot
Top is movably connected in permanent magnet（13）Lower section；The flexural pivot includes flexural pivot lower wall（8）, disk on flexural pivot（9）, be wrapped in ball
Cut with scissors lower wall（8）With disk on flexural pivot（9）Between rotation steel ball（11）；Flexural pivot lower wall（8）Bottom is equipped with opening, sunpender（12）Top
End is across the opening and rotation steel ball（11）It is connected；The flexural pivot lower wall（8）With disk on flexural pivot（9）Pass through a pair of of countersunk head spiral shell
Nail（10）It is connected；Sunk screw（10）Across flexural pivot lower wall（8）With disk on flexural pivot（9）After screw in permanent magnet（13）It is interior；
It is characterised in that it includes following steps：Point is by front work in front of the principle for determining straight line using 2 points, i.e. drilling rod
Prior preformed hole determines on word steel arch-shelf web, and drilling rod rear point is true by the guider installed on the I-steel arch of rear
It is fixed；The installation site of rear guider should be determined according to following two standards：1. drilling rod moves towards and tunnel centerline parallel；②
Guider clipping room is away from design requirement is met, i.e., rear kelly bar spacing is consistent with front drilling rod spacing, and error is little
In allowable range；Drilling guide device installation site determines after meeting above-mentioned two standards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710150476.7A CN106761494B (en) | 2017-03-14 | 2017-03-14 | A kind of guider and method for tunnel pre-grouting armature boring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710150476.7A CN106761494B (en) | 2017-03-14 | 2017-03-14 | A kind of guider and method for tunnel pre-grouting armature boring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761494A CN106761494A (en) | 2017-05-31 |
| CN106761494B true CN106761494B (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710150476.7A Active CN106761494B (en) | 2017-03-14 | 2017-03-14 | A kind of guider and method for tunnel pre-grouting armature boring |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269303B (en) * | 2017-07-10 | 2023-04-25 | 中铁十一局集团第四工程有限公司 | Fixing device for three-arm rock drilling trolley to be provided with foot locking anchor rod and using method of fixing device |
| CN111828049B (en) * | 2020-07-28 | 2022-04-15 | 中建七局安装工程有限公司 | Shallow-buried underground excavation tunnel advanced small guide pipe construction method |
| CN113931668B (en) * | 2021-10-13 | 2023-09-15 | 广西新发展交通集团有限公司 | Positioning device for tunnel primary support steel arch stock drilling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2214789A (en) * | 1938-05-21 | 1940-09-17 | Ingersoll Rand Co | Centralizer for drill steels |
| CN2876312Y (en) * | 2005-12-29 | 2007-03-07 | 新疆石油管理局钻井公司 | Self locking type rotary fishing hook |
| CN101117196A (en) * | 2007-07-11 | 2008-02-06 | 本溪钢铁(集团)有限责任公司 | Hanger with steel-reel damage-proof function |
| CN204605621U (en) * | 2015-03-15 | 2015-09-02 | 河北百冠钻井设备有限公司 | A kind of drilling rod transport and handler |
| CN206539323U (en) * | 2017-03-14 | 2017-10-03 | 中铁十七局集团有限公司 | A kind of guider for tunnel pre-grouting armature boring |
-
2017
- 2017-03-14 CN CN201710150476.7A patent/CN106761494B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2214789A (en) * | 1938-05-21 | 1940-09-17 | Ingersoll Rand Co | Centralizer for drill steels |
| CN2876312Y (en) * | 2005-12-29 | 2007-03-07 | 新疆石油管理局钻井公司 | Self locking type rotary fishing hook |
| CN101117196A (en) * | 2007-07-11 | 2008-02-06 | 本溪钢铁(集团)有限责任公司 | Hanger with steel-reel damage-proof function |
| CN204605621U (en) * | 2015-03-15 | 2015-09-02 | 河北百冠钻井设备有限公司 | A kind of drilling rod transport and handler |
| CN206539323U (en) * | 2017-03-14 | 2017-10-03 | 中铁十七局集团有限公司 | A kind of guider for tunnel pre-grouting armature boring |
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| Publication number | Publication date |
|---|---|
| CN106761494A (en) | 2017-05-31 |
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